drop heroku-18.Dockerfile openssl 1.1.1 upgrade prevention workaround
drop heroku-18.Dockerfile openssl 1.1.1 upgrade prevention workaround

emeth-/heroku-buildpack-php,emeth-/heroku-buildpack-php,alzheic/heroku-buildpack-aop,heroku/heroku-buildpack-php,emeth-/heroku-buildpack-php,heroku/heroku-buildpack-php,heroku/heroku-buildpack-php,alzheic/heroku-buildpack-aop,emeth-/heroku-buildpack-php,heroku/heroku-buildpack-php,alzheic/heroku-buildpack-aop